Bind group communication on api_eth and not 0.0.0.0
Bind group communication on api_eth and not 0.0.0.0

To avoid any bind trouble/address already in use, we force the group
communication to bind on api_eth.

Possibly :

close #110
close #11

redhat-cip/puppet-openstack-cloud,gwdg/puppet-openstack-cloud,gwdg/puppet-openstack-cloud,Prophidys/puppet-openstack-cloud,Prophidys/puppet-openstack-cloud,goneri/puppet-openstack-cloud,redhat-cip/puppet-openstack-cloud,redhat-cip/puppet-openstack-cloud,Prophidys/puppet-openstack-cloud,gwdg/puppet-openstack-cloud,goneri/puppet-openstack-cloud,gwdg/puppet-openstack-cloud